YOU SAID:
All sharks are fish but not all fish are sharks
INTO JAPANESE
すべてのサメは魚ですが、すべての魚がサメであるわけではありません
BACK INTO ENGLISH
All sharks are fish, but not all fish are sharks
INTO JAPANESE
すべてのサメは魚ですが、すべての魚がサメであるわけではありません
BACK INTO ENGLISH
All sharks are fish, but not all fish are sharks
That didn't even make that much sense in English.